User's Manual

Table Of Contents

5.2.2.2. Configuration example

As it was mentioned above, RipEX2 radiomodem works as a standard IP router with two independent

interfaces: radio and ETH. Each interface has got its own MAC address, IP address and mask.

The IP router operating principles stipulate that every unit can serve as a repeater. Everything what is

needed is the proper configuration of routing tables.

Radio IP addresses of the RipEX2 units required to communicate over the radio channel must share

the same IP network. We recommend planning your IP network so that every RipEX2 is connected to

a separate sub-network over the Ethernet port. This helps to keep the routing tables clear and simple.

Note

Even if the IP addresses of all RipEX2 units in a radio channel share a single IP network, they

may not be communicating directly as in a common IP network. Only the RipEX2 units that

are within the radio range of each other can communicate directly. When communication with

radio IP addresses is required, routing tables must include even the routes that are within the

same network (over repeaters), which is different from common IP networks. The example

configuration below does not show such routing rules for the sake of simplicity (they are not

needed in most cases).

Fig. 5.5: Router - Flexible, Addressing

Formal consistency between the last byte of the radio IP address and the penultimate byte of the Eth-

ernet address is not necessary but simplifies orientation. The “Addressing” image shows a routing table

next to every RipEX2. The routing table defines the next gateway for each IP destination. In radio

transmission, the radio IP of the next radio-connected RipEX2 serves as the gateway.

RipEX2 in detail